Core RR

From the moment races are categorized by physical characteristics or phenotypes, they are biological realities. Since biology is relating to living things.

But it is a red herring anyway, what matters is if the groups are identifiable and can have these differences measured. People know what races refer to. With maybe some further subdivisions like between West and East Asians to be even more accurate. All we need is this. Unless you wamt to argue black skin or white skin are illusions.